Furnace.



ea set-s.

PATENT summon.

To all whom a may concern Be it known that I, ALFRED SM LLWOOD, a subject of the Kingdom of Great Britain, residing at 4:2 Hargrave Park, Highgate, London, N., in the county of Middlesex, England, have invented certain new and useful Improvements in or Relating to Furnaces, of which the folowingis a specification.

This invention comprises certain improvements in or relating to furnaces, and is particularly applicable to furnaces for the heating of billets, or other articles .of a like character. The present invention provides a particularly simple and efficient mode of and means for displacing or advancing the billets within the heating chamber so that they may be introduced'at one extremity, caused to traverse the length of the heating chamber, and removed from the other extremity.

The present invention relates to mechanism for displacing or advancing articles within a heating chamber, of the type in which the articles are advanced or displaced upon supporting means adapted to elevate and lower the goods, and also to displace or advance the goods horizontally, and in which the mechanism for elevating and lowering said supporting means also effects the horizontal displacement of the supporting means in an action according to which said supporting means are raised by said elevating and lowering mechanism, then advanced or displaced horizontally by the same mechanism, and then still by the same mechanism lowered in their displaced or advanced condition. According to the present invention, in this type of mechanism the supporting means are adapted to be lowered into openings adapted to contain cooling liquid, and when the bars are in their lowered positions they are thereby protected from the heat of the furnace chamber. The said supporting means may furthermore be adapted to be cooled internally, for which purposethey are hollow and adapted to have cooling liquid circulated through them.

In order that this invention may be clearly understood and readily carried into practice, reference may be had to the appended explanatory two sheets of drawings, upon which Figure l is a sectional planof a furnace according to the present invention.

Specification of Letters Patent. l Application filed May e, 1917. Serial No. 167,547.

Patented Jan. v, 1am.

Fig. 2 is an enlarged sectional end elevtv tion of the furnace shown in Fig. 1.

Fig. 3 illustrates in side elevation a detail in the furnace shown in Fig. 1. g y In the drawlngs, 04 1s the furnace chamber a in which the goods are heated, and to which furnace gases from sol1d,'11qu1d, or gaseous fuel fittings are supplied by any suitable arrangements (not shown). The furnace chamber a has longitudinal openings b in its base; these openings 6 are adapted to accommodate the bars 0 by which the billets (Z or other goods are displaced. The bars 0 extend beyond the extremities of the furnace chamber at both ends so that the goods can be placed upon them at one extremitypf the furnace outside of the heating chamber thereofQand removed therefroni at, the other end of the furnace outside of the heating chamber thereof; At positions at or near to their ends, conveniently in the @vicinities of the ends of the furnace chamber, said bars 0 are furnished with eccentric straps 6. These eccentric straps are bolted or otherwise secured to the bars, and they are adapted to cooperate with eccentrics f mounted upon transverse shafts 9, one of which is pro vided at each extremity of the furnace. Each transverse shaft 9 carries two eccentries f, one for each bar, and the said transverse shafts g also each carry a central worm wheel it which meshes with a worm provided upon a vertical shaft 2', which last-mentioned shaft 2' carries a bevel wheel y. This bevel Wheel 7' meshes with a bevel wheel mounted on a laterally extending shaft Z. T he later ally extending shafts Z, one at each end of the furnace, carry at their outer extremities other bevel Wheels 112. which are in mesh with bevel wheels at rovided upon a common longitudinal sha t o whichis adapted to be driven in any suitable manner. In the arrangement illustrated, the shaft 0 carries fast and loose pulleys p to which the drive is imparted by belt gearing.

The bars c are conveniently hollow and adapted to have water or other cooling liquid circulated through them. For this purpose they may each comprise a channelshaped part and a closure plate 9 adapted to form conduits to in which the water is adapted tocirculate, as for instance by flexione of the. base extensions Thecorrewhen the bars are in their lowered positions they are thereby immersed in the water and p'rotectedufrom the heat of "the "furnace chamber. Closure members. 8-.111f 1 y l)e incorporated and adapted to isolate the chainbers 7" from recesses b llrWlllClli the bars 0 are adapted to operate 'whendisplac'ing the goo 1 Vertical sliding doorsat are providedfat the: extremities of the furnace chamber.

ya, u are baseextensions provided one at each end of thefurnace chamber,throughout .xt'hetlength of which base extensions the'bars c extend, and said base extensions have their upper .surfaces'at alleveilcoinciding-withthat .of the baseofthe furnaceehamber.

-1In op*eration the goods are placed-'- upon 7 spending 1 door t is raised, and the shaft '0 Q is drivencontinuously so that by :virtuegof the 'eccentries 7, the bars a are "elevated'to lift thevgoods' abovethe base upon which l they rest. ,i The, goods are then moved forward by the-further action of the: eccentrics 1 until the bars again descend-below the upper surface of the-base, atwhichpoint the goods some: mas patent. may, 'be, obtained. for

are replaeed'upon the base in an advanced position. By this process thegoods-may be intermittently and progressively advanced was ,desired A untilj they. acquiregthe desired position -within the furnace chamber. In

These-chambers are adapted to contain Water or other cooling llquld, and

like manner the goods may be removed from the furnace chamber on to the base extension at the other end of the furnace.

WVhat I claim as my invention and desire to secure by Letters Patent is 2- 1. A furnace for heating billets or the like, including a furnace floor provided with longitudinal grooves constituting water baths at the lower portion, bars normally disposed 111 said baths, and means for lifting the bars in parallel motion from the baths and above saidfloor to raise the work and move the same-forward a predetermined. distance and then replace the work on the'floor and return the bars .to the baths.

In a furnace for.- -he'ating billets and the like, a .furnace floor providedjwith base.ex-;

tensions in thesanie horizontal plane, said base extensions being located outside the furnace proper, SilldffiOOlf and extensions being provided. with longitudinal grooves constituting water baths at the -:lower por- 131011, bars normally dis'posed' n saidbaths, 4 andmeans for lifting said-bars 1n. parallel motion from the baths and above said ffioor to 'raise .the work above one ofsaid extenrsionsia-ndmove the same'forward toco'n-u vey the work in a 'seriesof steps through the 'furnace onto-the opposite 'base extension,

said means returning the barsbetween: successive steps to the baths.

- In testimonywhereof I. affix my signature a in presence of two; witnesses.

ALFRED S'MALLWOOD.

lVitnesses:

DUDLEY; REGINALD CARTER, GEOFFR Y HERBERT NANKIRSH.

five cents each, byaddr ess ing the Commissioner of 2mm,

Washington, 110. 

